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The Mishawaka editions of the Sanborn Map Company as a document series; the Library of Congress digital run
The buildings on these sheets belong to the architecture pass; the series belongs here — and the series is a biography of the built city in six inspections. The Sanborn Map Company of New York sent its surveyors into American towns to draw, building by building and at fifty feet to the inch, everything a fire-insurance underwriter needed to price a risk: footprints, wall materials, heights, openings, boilers, water supply, the fire department itself. The county map-records inventory, derived from the Library of Congress's holdings, gives Mishawaka's digitized run entire: March 1886, July 1891, February 1896, 1901, 1907, and 1913. Six editions across twenty-seven years, at intervals of roughly five years — the rhythm of a town whose insured fabric kept changing fast enough to be worth re-surveying on the company's standard cycle.
What the run's span proves, before a single sheet is opened, is the existence and persistence of an insurable city. Sanborn surveyed where policies were written. A first edition in 1886 certifies that by the middle of the 1880s Mishawaka's core — the mills and foundries at the rapids, the Main Street commercial blocks, the dense streets around them — held enough concentrated, combustible, valuable construction to justify the most expensive mapping product in America. Each renewal certifies that the core was still growing and changing: an 1891 edition for the town the Dodge works and the woolen mills were remaking, an 1896 edition across the depression decade, editions of 1901 and 1907 for the rubber-boom city, and a 1913 edition on the eve of the Great War. The architecture pass of this build cites individual sheets for individual buildings — a factory's footprint, a church's wall material, a theatre's plan — and that use is the sheets' ordinary afterlife. The series' own statement is the sequence: no gap longer than six years in twenty-seven, then the digitized record ends.
Where it ends must be printed exactly. The sources reached establish the six Library of Congress digitized editions and nothing beyond them. The Library's own guide to the Sanborn collection states that all public-domain Sanborn maps have been digitized — which bounds the digital run by copyright, not by the company's output — and that each record in the Library's Sanborn database carries the edition's sheet count, including for volumes never digitized. Both are named here as the leg's standing gaps, with their settling sources: the Library of Congress Sanborn Fire Insurance Maps database, which records state, city, edition date, and sheet count for the whole collection, bound and unbound, digitized or not; the printed checklist of 1981, Fire Insurance Maps in the Library of Congress, compiled under Walter W. Ristow's direction; and Indiana University's Wells Library, the state's designated Sanborn repository, whose Indiana Spatial Data Portal serves the Indiana scans. Until one of those is read for Mishawaka, this section prints six editions, 1886–1913, and claims no sheet counts and no later run.
Sources:
- St. Joseph County Map Records inventory: the six Mishawaka Sanborn editions at the Library of Congress (March 1886; July 1891; February 1896; 1901; 1907; 1913).
- Library of Congress, Fire Insurance Maps at the Library of Congress: A Resource Guide: the digitization of all public-domain Sanborn maps; the Sanborn database's record contents, including sheet counts and non-digitized holdings.
- This build, architecture pass: the Sanborn sheets cited at building size throughout.